Rational and Irrational (time:
7:23)
http://www.youtube.com/watch?v=QIoVPtbEUjw
This is one of the best all around
sites that I have found. It is titled "The MacTutor
History of Mathematics Archive."
http://www-history.mcs.st-and.ac.uk/~history/
This is an
award-winning site that links to all sorts of mathematics
information.
http://archives.math.utk.edu/
Pythagoras:
http://www-history.mcs.st-and.ac.uk/~history/Mathematicians/Pythagoras.html
Karl Gauss
(Problem 57) is one of the most important mathematicians
in history:
http://www-history.mcs.st-and.ac.uk/~history/Mathematicians/Gauss.html
A variety of proofs of the Pythagorean theorem
are found at this site. There are also some interesting
remarks concerning this theorem:
http://sunsite.ubc.ca/LivingMathematics/V001N01/UBCExamples/Pythagoras/pythagoras.html
For those of
you who think that irrational numbers can be written
in some (yet unknown) decimal form, you might want
to check out this totally useless web page:
http://antwrp.gsfc.nasa.gov/htmltest/rjn_dig.html
A fun trivial
game:
http://eveander.com/trivia/
"Pi through
the ages," is an interesting history of the number.
http://www-groups.dcs.st-and.ac.uk/~history/HistTopics/Pi_through_t